{"id":"F2009L02815","name":"AD/BUSHBY M2/2 Amdt 1 - Sta 114.75 Bulkhead Member P/N 240.339 - CANCELLED","slug":"ad-bushby-m2-2-amdt-1-sta-114-75-bulkhead-member-p-n-240-339-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80063,"registerId":"commonwealth-F2009L02815-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bushby Mustang II Series Aeroplanes","sectionType":"division","heading":"Bushby Mustang II Series Aeroplanes","content":"### Bushby Mustang II Series Aeroplanes\n\n| AD/BUSHBY M2/2 Amdt 1 | Sta 114.75 Bulkhead Member P/N 240.339 | 8/2009 |\n| --------------------- | -------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                             |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 30 July 2009.                                                                                                                                                                                                                                                                                  |\n| Background:  | This AD, raised in1990 against Mandatory Bushby Mustang II Service Bulletin (SB) dated 15 March 1989, required a modification to prevent cracking of bulkhead atSTA 114.75. Compliance was required prior to 31 August 1985.As all affected aircraft would have been modified long ago, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n18 June 2009","sortOrder":0},{"sectionNumber":"AD/BUSHBY M2/2 Amdt 1","sectionType":"part","heading":"AD/BUSHBY M2/2 Amdt 1","content":"## AD/BUSHBY M2/2 Amdt 1","sortOrder":1},{"sectionNumber":"Sta 114.75 Bulkhead Member P/N 240.339","sectionType":"part","heading":"Sta 114.75 Bulkhead Member P/N 240.339","content":"## Sta 114.75 Bulkhead Member P/N 240.339","sortOrder":2},{"sectionNumber":"8/2009","sectionType":"part","heading":"8/2009","content":"## 8/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1698},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument simply cancels the original Airworthiness Directive. The scope has not expanded; rather, the regulatory requirement is being terminated because compliance was achieved long ago."},"complexity_factors":["Single operative provision cancelling a previous instrument","No defined terms or interpretation section","No cross-references to other legislation","No conditional logic or exceptions"],"plain_english_summary":"This document **cancels** a previous aviation safety rule (an Airworthiness Directive) that applied to Bushby Mustang II aircraft.\n\n**What the old rule required:** The original 1990 directive mandated a modification to prevent cracking of a specific bulkhead member (part number 240.339 at station 114.75). Aircraft owners had to complete this work before 31 August 1985.\n\n**Why it's being cancelled:** Because the compliance deadline passed more than 20 years ago, all affected aircraft would have been modified long ago. The rule is now redundant and is formally cancelled effective 30 July 2009.\n\n**Who this affects:** Owners and operators of Bushby Mustang II series aeroplanes. In practice, this removes an obsolete requirement rather than imposing any new obligations."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bushby-m2-2-amdt-1-sta-114-75-bulkhead-member-p-n-240-339-cancelled","history":"/api/acts/ad-bushby-m2-2-amdt-1-sta-114-75-bulkhead-member-p-n-240-339-cancelled/history","analysis":"/api/acts/ad-bushby-m2-2-amdt-1-sta-114-75-bulkhead-member-p-n-240-339-cancelled/analysis","conflicts":"/api/acts/ad-bushby-m2-2-amdt-1-sta-114-75-bulkhead-member-p-n-240-339-cancelled/conflicts","importantCases":"/api/acts/ad-bushby-m2-2-amdt-1-sta-114-75-bulkhead-member-p-n-240-339-cancelled/important-cases","documents":"/api/acts/ad-bushby-m2-2-amdt-1-sta-114-75-bulkhead-member-p-n-240-339-cancelled/documents"}}